Here's Johnny! (#1563)

Adds Johnny API to Vindicator

Spigot-API-Patches/Here-s-Johnny.patch

@@ -0,0 +1,43 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <Blake.Galbreath@GMail.com>
+Date: Fri, 12 Oct 2018 01:37:16 -0500
+Subject: [PATCH] Here's Johnny!
+
+
+diff --git a/src/main/java/org/bukkit/entity/Vindicator.java b/src/main/java/org/bukkit/entity/Vindicator.java
+index b8ea68a8..c5d9e76a 100644
+--- a/src/main/java/org/bukkit/entity/Vindicator.java
++++ b/src/main/java/org/bukkit/entity/Vindicator.java
+@@ -0,0 +0,0 @@ package org.bukkit.entity;
+ /**
+  * Represents a Vindicator.
+  */
+-public interface Vindicator extends Illager { }
++public interface Vindicator extends Illager {
++    // Paper start
++    /**
++     * Check if this Vindicator is set to Johnny mode.
++     * <p>
++     * When in Johnny mode the Vindicator will be hostile to any kind of mob, except
++     * for evokers, ghasts, illusioners and other vindicators. It will even be hostile
++     * to vexes. All mobs, except for endermites, phantoms, guardians, slimes and
++     * magma cubes, will try to attack the vindicator in return.
++     *
++     * @return True if in Johnny mode
++     */
++    boolean isJohnny();
++
++    /**
++     * Set this Vindicator's Johnny mode.
++     * <p>
++     * When in Johnny mode the Vindicator will be hostile to any kind of mob, except
++     * for evokers, ghasts, illusioners and other vindicators. It will even be hostile
++     * to vexes. All mobs, except for endermites, phantoms, guardians, slimes and
++     * magma cubes, will try to attack the vindicator in return.
++     *
++     * @param johnny True to enable Johnny mode
++     */
++    void setJohnny(boolean johnny);
++    // Paper end
++}
+--

Spigot-Server-Patches/Here-s-Johnny.patch

@@ -0,0 +1,39 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <Blake.Galbreath@GMail.com>
+Date: Fri, 12 Oct 2018 01:37:22 -0500
+Subject: [PATCH] Here's Johnny!
+
+
+diff --git a/src/main/java/net/minecraft/server/EntityVindicator.java b/src/main/java/net/minecraft/server/EntityVindicator.java
+index 597878e2c..4e59df891 100644
+--- a/src/main/java/net/minecraft/server/EntityVindicator.java
++++ b/src/main/java/net/minecraft/server/EntityVindicator.java
+@@ -0,0 +0,0 @@ import java.util.function.Predicate;
+ import javax.annotation.Nullable;
+ 
+ public class EntityVindicator extends EntityIllagerAbstract {
+-    private boolean b;
++    private boolean b; public boolean isJohnny() { return b; } public void setJohnny(boolean johnny) { b = johnny; } // Paper - OBFHELPER
+     private static final Predicate<Entity> c = (entity) -> {
+         return entity instanceof EntityLiving && ((EntityLiving)entity).df();
+     };
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftVindicator.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftVindicator.java
+index 951d47929..5ff957ced 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftVindicator.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftVindicator.java
+@@ -0,0 +0,0 @@ public class CraftVindicator extends CraftIllager implements Vindicator {
+     public EntityType getType() {
+         return EntityType.VINDICATOR;
+     }
++
++    // Paper start
++    public boolean isJohnny() {
++        return getHandle().isJohnny();
++    }
++
++    public void setJohnny(boolean johnny) {
++        getHandle().setJohnny(johnny);
++    }
++    // Paper end
+ }
+--